Fluid-pressure regulator



UNITED STATES M, f v' ABRAHAMYKr-Pr, JR., ANDHUGHYMURPIIY, 'ousme smeyNEw-'Youn l' Y SPECIFICATION forming part` of 'Letters raient ,'N. ee4,1eo,`deedrebruary 3, 1880.

' i ppiianon fnedmvemberieisia 'y To all whom ty/may concern: Y y Be it known that we, ABRAHATMKIPE Jr., and HUGH MURrHIL'of Sing Sing,Westchester county,- State of New York, have-invented Improvements in Gas'- Regulators, of which,

the following is aspecitication.v l

Our invention consists 'incertain improve` ments iu huid-pressure regulators for regulating automaticallythe pressure of gas, designed Io for the purpose of increasing their efficiency,

adding to their safety from accidental explosion, of ohviating-their liability of getting out of order, and of eonducing `to`facility in their construction. f v I5 The drawing, FigureV 1, is a' perspective 'kectional View of a selfacting regulator, in' whichy i A indicates the passage leading from the gas-holder; B, the globular chamber `con :zo taining the valve, and C the opening c011- necting with the 1nains. A neck, D, con-V nects the globe B with the llattened circularV chamber E,in which is a diaphragm,lf,`, formed of two thin metallic plates, holding between 2 5 them a larger disk of leather orother flexible gas-tight material, the extended Vmargin of which is held between the flan ge of the lower part of the chamber E and the ring Gr by screws. The cap forming the upper port-ion other screws, so that it can be removed, if necessary, without disturbing the fastenings of the diaphragm.

A casting, H, separate from the globe B, toy 3 5 which it is attached by bolts through its dange, forms the' double valve-seat for the valve I. The latter is in one casting, together with its hollow stem and the feathers J, which guide its motion vertically. Only one ofthe feathers is shown in the drawing. y j

The valve-rod K, connected with the valve, as hereinafter described, passes upward through the neck D, and is connected with the center of the diaphragm F, above which the rod is prolonged through the cover of the chamber E, and is on the outside jointed, by means of a chain, L, to the balanced lever M, having on its outer arm the adjustable weight N, by which the regulator is set to act at the press- 5o ure desired,

The action of the regulator is as follows:

of the chamber E is attached to the ring G by The weight on Vthe lever having been set for i the desiredupressure, the gas which has passed the valve I,fif of a pressurein excess of that' desired, willactona-,theuuderside of the diaphragm F, c/ausing it to rise, together with the A valve-I suspended below it, thus closing the `valve-openings until the pressure is suitably reduced. On,A the other hand, when the pressure is deficient in the main the diaphragm and 6o valve descend until the openings are just wide enough' to allow the proper amount of gas to pass, the valve being Vthus automatic at any pressure at which it may be set to act.

Experience in themauufacture and use of regulators such asabove described and others fof', like nature have pointedout the necessity of improvements in some ofthe details, which improvements constitute parts of our invention. In the movement of the diaphragm there 7 oV is Aapt to be a slight divergence from the exact `central line, caused by unequal degrees of rigidity in the material used for the llexible part-s of the same, giving rise to objectionable friction of the valve or the edges of its feather- 7 5 guides against the seat-openings. AIn an instrument so delicate, required to act at such" Y extremelyslight variations of pressure, it becomes essential to relieve the valve from any lateral pressure which might be communi- 8o cated through the rod. To obviate the difficulty referred to, the stem connecting the two disks of the valve I is bored of a larger caliber V than the size of the valverod K, or is cast with a conical hole, except at the lower extremity, where it is contracted so as just to easily lit the valve-rod.

The rod K has a head'or knob on its lower end, which lit-s in cavities or is otherwise coniined between the bottom of the valve I and 9o the cap O, forminga universal joint, which leaves the rod Vat liberty to diverge slightly from the perpendicular without aifecting the action of the valve. The ycap O is perforated to allow any moisture which may condense in the bore of theV stem tov pass out.

At the pointwhere the valve-rod K passes out through the cover 0f the diaphragm-chamber E to connect with the balanced lever M it is essential that no gas escape into the 10o apartment containing the apparatus in case of any leakage or rupture occurring in the diaphragm, which might endanger explosion if unobserved in time, several disastrous explosions having been known to occur from this cause. For the purpose of avoiding this dauger We employ a mercurial seal formed by a deep annular channel, P, cut in the cylindrical neck of thecap of the diaphragmchamber E, Which channel is illed with mercury. Aflixed to the rod K is the cylindrical bell Q, made to lit loosely into the channel P, with its edge submerged in the mercury, thereby constituting a gas-tight seal, allowing africtionless upand-down motion to the rod, and permitting a slight lateral divergence of the same for the purpose before alluded to. Frein above the diaphragm a small pipe, R, makes a communication with the outside air, and conveys to a place of safety the gas, if any, which may leak through the diaphragm.

stautially as shown, and for the purpose de 3o scribed.

A. KIPP, JR. HUGH MURPHY.

Witnesses:

EDWARD EVERETT, ISAAC B. NoXoN. 

